Granted Patent
Utility
US 6,168,257 · App. 08/989,153
Maintenance station for an ink cartridge for a printer
Inventor:
Charles Stanley Aldrich
Patented Case
View Patent ↗
Granted: Jan 2, 2001
Filed: Dec 12, 1997
Inventor
Charles Stanley Aldrich
Assignee (at issue)
Lexmark International, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.